For isolation of digital signals such as RS-232 (before level translation), it's hard to find something more amazing than the Analog Device ADuM5241
http://www.analog.com/en/prod/0,2877,ADUM5241,00.html It's an SO-8 device, with two digital channels, isolated to 2500V (!) and a built-in power converter that delivers 5V @ 10mA. All in an SO-8 package. The power converter runs at 300 MHz. But wait, it costs <$3 in 1,000 pcs quantity. They have other options in the same series, with more channels (in a larger package). After seeing that, the LTC 1535 from Linear Technology, which would be pretty amazing in it's own right, looks pretty dull: http://www.linear.com/pc/productDetail.jsp?navId=H0,C1,C1007,C1017,P1746 Didier KO4BB > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Matthew Smith > Sent: Saturday, March 08, 2008 12:15 AM > To: Discussion of precise time and frequency measurement > Subject: Re: [time-nuts] Mounting GPS Antenna on Steel Roof > > Quoth Brian Kirby at 2008-03-08 14:46... > > Attached is a interface for an Oncore VP receiver. You > will have to > > check - I believe the GT and UT use the same connections as the VP. > > Thanks Brian - that's pretty close to what I've come up with > apart from the fact that I'm putting isolation (TI ISO7231) > between the receiver and the rest of the circuit and the > receiver is powered by a MeanWell high-isolation DC/DC > convertor. And I've got mine running right to left ;-) > > I've got a something very similar drawn up for my Trimble > modules except that the isolation and level conversion is x2, > for the two serial ports. > > Cheers > > M > > -- > Matthew Smith > Smiffytech - Technology Consulting & Web Application Development > Business: http://www.smiffytech.com/ > Personal: http://www.smiffysplace.com/ > LinkedIn: http://www.linkedin.com/in/smiffy > > _______________________________________________ > time-nuts mailing list -- [email protected] To unsubscribe, > go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.5.516 / Virus Database: 269.21.6/1316 - Release > Date: 3/6/2008 6:58 PM > > No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.21.6/1316 - Release Date: 3/6/2008 6:58 PM _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
